NEET (UG)

Practice Test 1 — Human Health and Disease

12 questions • 18 minutes • auto-graded with full solutions

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Section A — MCQ (Single Correct)

Question 1

The most serious form of malaria is caused by:

Solution: P. falciparum causes the most serious (malignant) malaria.

Question 2

Amoebiasis is caused by:

Solution: Entamoeba histolytica causes amoebiasis.

Question 3

Interferons are part of:

Solution: Interferons are a cytokine barrier of innate immunity.

Question 4

Cell-mediated immunity is carried out by:

Solution: T-lymphocytes mediate cell-mediated immunity (CMI).

Question 5

An antibody molecule has:

Solution: H₂L₂ — two heavy and two light chains.

Question 6

The immunity from a vaccine is:

Solution: Vaccines stimulate the body's own antibodies — active immunity.

Question 7

HIV is a:

Solution: HIV is a retrovirus (RNA genome).

Question 8

Loss of contact inhibition is a feature of:

Solution: Cancer cells lose contact inhibition.

Section B — Assertion & Reason

Question 9

A: The secondary immune response is faster and stronger than the primary response.
R: Memory cells formed during the first exposure recognise the pathogen quickly on re-exposure.

Solution: Memory cells are precisely why the secondary response is faster — R explains A.

Question 10

A: Antibodies received through colostrum provide passive immunity.
R: Colostrum supplies ready-made antibodies that the baby's body did not produce.

Solution: Ready-made (not self-made) antibodies define passive immunity — R explains A.

Question 11

A: HIV strengthens the immune system over time.
R: HIV destroys the helper T-lymphocytes of the body.

Solution: A is false — HIV weakens (not strengthens) immunity; R is true (it destroys helper T-cells).

Question 12

A: A malignant tumour is more dangerous than a benign one.
R: Malignant cells can metastasise — spread to and grow in other parts of the body.

Solution: Metastasis is exactly why malignant tumours are more dangerous — R explains A.